CN101436488B - On-off large parameter induction current outdoor high-voltage AC grounding switch - Google Patents
On-off large parameter induction current outdoor high-voltage AC grounding switch Download PDFInfo
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- CN101436488B CN101436488B CN2008102376822A CN200810237682A CN101436488B CN 101436488 B CN101436488 B CN 101436488B CN 2008102376822 A CN2008102376822 A CN 2008102376822A CN 200810237682 A CN200810237682 A CN 200810237682A CN 101436488 B CN101436488 B CN 101436488B
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Abstract
The invention discloses a retractable large-parameter induced-current outdoor high-voltage AC earthing switch, which consists of three monopoles, wherein three phases are formed; each monopole consists of an earthing main loop and an auxiliary loop; the earthing main loop comprises a motor operating mechanism (1), a steel bracket (2), a base (4), a lower knife tube (5), a coupling (6), an upper knife tube (7) and a support insulator (8); and the auxiliary loop comprises an arc-extinguish-chamber operating mechanism (3), a moving arcing contact (9), an insulating roller wheel (10), a fixed arcing contact (11), a cable (14) and an SF6 arc extinguish chamber (16). In the invention, earthing knife tubes are designed to be the foldable upper knife tube and the lower knife tube; the auxiliary loop is used cooperatively during operation; electrical connection part is improved; the SF6 arc extinguish chamber is used cooperatively; and electrical linkage is adopted. Therefore, the switch has the characteristics of steady reliable motion, little switching-on impact, high technical parameters, excellent electrical properties, good anticorrosion performance, convenient operation, long life span and the like.
Description
Technical field
The present invention relates to a kind of power transmission and transforming equipment, specifically a kind of on-off large parameter induction current outdoor high-voltage AC grounding switch.
Background technology
Along with the development of domestic power technology, the increase of net capacity is taken up an area of in order to reduce the transmission of electricity corridor, adopts same tower double back transmission line to become the development trend of China 550kV trunk rack.Same tower double back transmission line is when one backhauls another time of row maintenance, because Electrostatic Coupling and electromagnetic coupled effect between two back transmission lines, in the maintenance loop, will produce induced voltage and induced current, operating personnel's personal safety and the equipment that is overhauling will be worked the mischief.For guaranteeing reliability of operation and fail safe, the earthed switch of earthed switch that uses on the circuit and isolating switch attaching must have the ability of opening and closing induction current.Present both at home and abroad opening and closing induction current is with all supporting employing vacuum interrupter of earthed switch, arc control device and the mechanical linkage of earthed switch main contact, the sound arcing contact is directly squeezed into mode, because the limitation of vacuum interrupter self, it cut-offs static induced current ability maximum only can reach 70kV, 50A, and a plurality of provinces such as domestic for example Shandong have proposed to cut-off the requirement that the static induced current ability reaches 100kV, 100A, and vacuum interrupter can not meet the demands.
The SF6 arc control device adopt the SF6 gas of insulation and arc extinction performance excellence as the insulation arc-extinguishing medium, do not have burning, explosion hazard, and arc control device adapted spring operating mechanism is simple and compact for structure, safe and reliable.When cut-offfing small inductor, capacitance current, the arc control device moving contact makes gas generation inside and outside differential pressure in the cylinder by mechanical movement, produces strong air-blowing extinguish arcs, and break performance is good, and the arcing time is short, and electric life is long, and operation noise is little.
Summary of the invention
For overcoming the deficiency that prior art exists, the invention provides a kind of on-off large parameter induction current outdoor high-voltage AC grounding switch, the special-purpose SF6 arc control device of supporting employing, adopt between arc control device and earthed switch main contact and adopt the rolling way of contact between electric-linked fit system, sound arcing contact, can reach the requirement of folding static induced current 100kV, 100A, folding em induced current 35kV, 1000A.
For achieving the above object, technical scheme of the present invention is as follows:
Form by three one poles, form three-phase, each one pole is formed by ground connection major loop and subsidiary loop, the ground connection major loop includes the motor operating mechanism, steel bracket, base, following cutter pipe, the connecting shaft knot, upper slitter pipe and post insulator, subsidiary loop includes the arc control device operating mechanism, moving arcing contact, the insulation roller, the quiet arc contact, cable and SF6 arc control device, the motor operating mechanism, arc control device operating mechanism and base are installed on the steel bracket, following cutter pipe, post insulator and arc control device are installed on the base, the upper slitter pipe is installed in down on the cutter pipe by the connecting shaft knot, upper slitter pipe front end is provided with main contact, quiet arc contact and ground connection fixed contact are installed on the post insulator, cable one end is connected on the binding post of SF6 arc control device, the other end of cable is connected the end of moving arcing contact, cable and moving arcing contact are attached to down on cutter pipe and the upper slitter pipe by silicon rubber insulator, wherein motor operating mechanism and arc control device operating mechanism link together by secondary cable, and motor operating mechanism inside is provided with the time relay that can realize motor operating mechanism and the interlock of arc control device operating mechanism.
The SF6 arc control device and the jackknife tube portion of adapted of the present invention adopt split type installation, motor operating mechanism and arc control device operating mechanism use electric-linked, service time, action that relay is coordinated both cooperated in secondary control loop, can adjust the operate time of arc control device flexibly.Triggered time relay when the motor operating mechanism begins branch, closing operation, trigger the arc control device operating mechanism behind the time-delay certain hour and carry out branch, closing operation, removed the structural constraint of earthed switch, thereby increased the space of further lifting earthed switch opening and closing induction current ability arc control device.Being used of subsidiary loop makes it have the faradic ability of the big parameter of light folding, reaches the effect of folding em induced current 35kV, 1000A and folding static induced current 100kV, 100A.
Described ground connection fixed contact is a blossom type fingertip structure, can make active contact and ground connection fixed contact contact point many.
The active contact of described upper slitter pipe front end is a clavate, and structural strength is good.
Be provided with balancing spring in the described down cutter pipe, the impulsive force when making overall structure reduce to close a floodgate operate lightly, and stable action is reliable, install, debugging conveniently.
Being electrically connected between contact tube and the base adopted the zinc-plated soft conductive strips of copper, and contact is reliable, has improved the conduction through-current capability, has guaranteed good thermal stability.
Description of drawings
Fig. 1 is the structural representation of one pole "on" position of the present invention;
Fig. 2 is the end view of Fig. 1;
Fig. 3 is the structural representation of one pole gate-dividing state of the present invention.
Embodiment
Describe the present invention below in conjunction with the drawings and specific embodiments:
As Fig. 1, Fig. 2 and shown in Figure 3, motor operating mechanism 1, arc control device operating mechanism 3 and base 4 are installed on the steel bracket 2, following cutter pipe 5, post insulator 8 and SF6 arc control device 16 are installed on the base 4, upper slitter pipe 7 is installed in down on the cutter pipe 5 by connecting shaft knot 6, upper slitter pipe 7 front ends are provided with initiatively contact 18, quiet arc contact 11 and ground connection fixed contact 13 are installed on the post insulator 8, on ground connection fixed contact 13 and connecting shaft knot 6, be equipped with shading ring 12, cable 14 1 ends are connected on the binding post of SF6 arc control device 16, the other end is connected the end of moving arcing contact 9, cable 14 and moving arcing contact 9 are attached to down on cutter pipe 5 and the upper slitter pipe 7 by silicon rubber insulator 15, wherein motor operating mechanism 1 and arc control device operating mechanism 3 link together by secondary cable 17, and realize the action matching relationship of motor operating mechanism 1 and arc control device operating mechanism 3 by the motor operating mechanism 1 inner time relay that is provided with.Ground connection fixed contact 13 adopts the blossom type fingertip, and the active contact 18 of upper slitter pipe 7 front ends is a clavate.
To sum up, during separating brake of the present invention upper slitter pipe 7 and following cutter pipe 5 close up downwards folding, active contact 18 first separating brakes, auxiliary contact separating brake again behind the arc control device arc extinguishing; Upper slitter pipe 7 and following cutter pipe 5 stretch as arm during combined floodgate, and moving arcing contact 9 is inserted in the quiet arc contacts 11, and auxiliary contact closes a floodgate earlier, behind the arc control device arc extinguishing initiatively contact 18 close a floodgate again, thereby improved the ability of earthed switch opening and closing induction current greatly.
Galvanic circle of the present invention is mainly made by aluminium and copper material, and steelwork all adopts zincizing or hot dip galvanizing process, and crucial rotational components adopts stainless steel material, uses the CSTKA motor operating mechanism of stainless steel casing, has good adaptive capacity to environment.
Claims (5)
1. on-off large parameter induction current outdoor high-voltage AC grounding switch, form by three one poles, form three-phase, it is characterized in that, each one pole is formed by ground connection major loop and subsidiary loop, the ground connection major loop includes motor operating mechanism (1), steel bracket (2), base (4), following cutter pipe (5), connecting shaft knot (6), upper slitter pipe (7) and post insulator (8), subsidiary loop includes arc control device operating mechanism (3), moving arcing contact (9), insulation roller (10), quiet arc contact (11), cable (14) and SF6 arc control device (16), motor operating mechanism (1), arc control device operating mechanism (3) and base (4) are installed on the steel bracket (2), following cutter pipe (5), post insulator (8) and SF6 arc control device (16) are installed on the base (4), upper slitter pipe (7) is installed in down on the cutter pipe (5) by connecting shaft knot (6), upper slitter pipe (7) front end is provided with initiatively contact (18), quiet arc contact (11) and ground connection fixed contact (13) are installed on the post insulator (8), cable (14) one terminates on the binding post of arc control device (16), cable (14) other end is connected on the end of moving arcing contact (9), cable (14) and moving arcing contact (9) are attached to down on cutter pipe (5) and the upper slitter pipe (7) by silicon rubber insulator (15), wherein motor operating mechanism (1) and arc control device operating mechanism (3) link together by secondary cable (17), and motor operating mechanism (1) inside is provided with the time relay that can realize motor operating mechanism (1) and arc control device operating mechanism (3) interlock.
2. on-off large parameter induction current outdoor high-voltage AC grounding switch according to claim 1 is characterized in that, described ground connection fixed contact (13) is a blossom type fingertip structure.
3. on-off large parameter induction current outdoor high-voltage AC grounding switch according to claim 1 is characterized in that, the active contact (18) of described upper slitter pipe (7) front end is a clavate.
4. on-off large parameter induction current outdoor high-voltage AC grounding switch according to claim 1 is characterized in that, is provided with balancing spring in the described following cutter pipe (5).
5. on-off large parameter induction current outdoor high-voltage AC grounding switch according to claim 1 is characterized in that, being electrically connected between contact tube and the base (4) adopted the zinc-plated soft conductive strips of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102376822A CN101436488B (en) | 2008-12-03 | 2008-12-03 | On-off large parameter induction current outdoor high-voltage AC grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102376822A CN101436488B (en) | 2008-12-03 | 2008-12-03 | On-off large parameter induction current outdoor high-voltage AC grounding switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101436488A CN101436488A (en) | 2009-05-20 |
| CN101436488B true CN101436488B (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102376822A Expired - Fee Related CN101436488B (en) | 2008-12-03 | 2008-12-03 | On-off large parameter induction current outdoor high-voltage AC grounding switch |
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| Country | Link |
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| CN (1) | CN101436488B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104576161A (en) * | 2015-01-27 | 2015-04-29 | 山东泰开高压开关有限公司 | Auxiliary arc extinguishing device used for ultrahigh-voltage grounding switch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713503A (en) * | 1986-08-26 | 1987-12-15 | A. B. Chance Company | Three phase vacuum switch operating mechanism with anti-bounce device for interrupter contacts |
| CN2473737Y (en) * | 2000-11-24 | 2002-01-23 | 涂大石 | New vacuum load isolating switch |
| CN100350536C (en) * | 2006-07-20 | 2007-11-21 | 丹东供电设备厂 | Opening and closing induction current vacuum switch |
| CN201041782Y (en) * | 2007-06-01 | 2008-03-26 | 山东泰开隔离开关有限公司 | Two-step action three-phase AC outdoor high-voltage ground switch |
| CN201307551Y (en) * | 2008-12-03 | 2009-09-09 | 山东泰开隔离开关有限公司 | Outdoor high-voltage alternating-current ground switch with high-parameter switching-induced current |
-
2008
- 2008-12-03 CN CN2008102376822A patent/CN101436488B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4713503A (en) * | 1986-08-26 | 1987-12-15 | A. B. Chance Company | Three phase vacuum switch operating mechanism with anti-bounce device for interrupter contacts |
| CN2473737Y (en) * | 2000-11-24 | 2002-01-23 | 涂大石 | New vacuum load isolating switch |
| CN100350536C (en) * | 2006-07-20 | 2007-11-21 | 丹东供电设备厂 | Opening and closing induction current vacuum switch |
| CN201041782Y (en) * | 2007-06-01 | 2008-03-26 | 山东泰开隔离开关有限公司 | Two-step action three-phase AC outdoor high-voltage ground switch |
| CN201307551Y (en) * | 2008-12-03 | 2009-09-09 | 山东泰开隔离开关有限公司 | Outdoor high-voltage alternating-current ground switch with high-parameter switching-induced current |
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| Publication number | Publication date |
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| CN101436488A (en) | 2009-05-20 |
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